I have a 3GS that runs sluggishly: performance wise I didn't really notice any difference between iOS 5 and iOS 6, as people have already said you'll miss out on a lot of the biggest features but things like the Facebook integration, shared photo streams and call features are quite nice to have!

One thing that did help my 3GS performance, by the way, was disabling spotlight search. Hope that helps

I upgraded my iPhone 3GS to iOS 6 and although it runs alright, I still regret it. The performance isn't the issue, it's just a rubbish iOS. The new music app looks horrible, the new app store and itunes store apps are ugly and hard to navigate, the colour scheme throughout the phone is inconsistent. And of course you lose Google Maps and the old YouTube app. It just plain sucks.

If you do decide to upgrade, make sure you have your SHSH blobs backed up so you can downgrade if you don't like it.

I'd probably stick with iOS 5 on an older device like the iOS 3GS. iOS6 really doesn't bring you much more functionality, plus Apple Maps being the default maps app would not be that great, especially to someone used to the reliability and usability of Google maps.

My dad's 3GS runs a little sluggish. Is iOS6 going to make it any slower? Maps was a big issue for him holding off, but is it worth upgrading on a 3GS in any case?

iOS 4.3.x, iOS 5.x, and iOS 6.x seem to run about the same speed on my iPhone 3GS.

iOS 6.x brings compatibility with more apps (some developers have made their apps iOS 6+ already), and adds a lot of new features. If you use Facebook or Twitter you will notice there are new widgets for those in the Notification Center.

There are a few issues with iOS 6 on any device:

- The default Maps app of course works different. Not just map data, but the interface and everything else about it. In some ways it is better, in some ways it is worse.

- If you have a lot of apps on your account (500+?), the App Store may not be able to show you your Purchased app history any more. This has been unfixed now for the past year.

IOS6 does bring facebook integration, passbook (admitably a dud feature), do not disturb, call-decline, shared photostream and supposedly faster safari to a 3GS. Youtube and a vastly improved google maps is available for download.

I would say to upgrade, because unless your sole purpose in owning a phone is for the maps, the average user would gain more features than he potentially stands to lose.

So far, my impression is that things happen noticeably slower on my 3GS in 6.0.1 than in 5.1.1. It does work, however, and it's not like you can just stay on old software forever. The longer you wait, the more apps are left behind, so if you're using an older phone like this, you might as well keep up until it becomes obsolete, right?

__________________Wait a second... So you're telling me anything that happens in the sky is legal, and there's a giant crime-blimp flying around this place? I don't know how I missed that.

Well, after a few days with iOS 6 on my 3GS, I can report that I should have left it on 5.1.1. I use the Music app most of the time, and it's frustratingly slow and laggy. The rest isn't that bad, but geez, I hate how difficult it is to navigate my music now.

Guess it's all part of the planned obsolescence scheme.

__________________Wait a second... So you're telling me anything that happens in the sky is legal, and there's a giant crime-blimp flying around this place? I don't know how I missed that.

Well, after a few days with iOS 6 on my 3GS, I can report that I should have left it on 5.1.1. I use the Music app most of the time, and it's frustratingly slow and laggy. The rest isn't that bad, but geez, I hate how difficult it is to navigate my music now.

Guess it's all part of the planned obsolescence scheme.

Yeah I realised it's quite laggy when scrolling through the long list. Not to mention the UI looks so ugly compared to that of iOS 5.